Probing the role of propagule pressure, stochasticity, and Allee effects on invasion success using experimental introductions of a biological control agent
datasetposted on 2021-02-10, 19:46 authored by Hester Williams, Eckehard Brockerhoff, Andrew Liebhold, Darren WardDarren Ward
To study the role of population size and how it relates
to the Allee effect in the early stage of establishment, the leaf beetle Neolema ogloblini (Chrysomelidae) a biocontrol agent released against Tradescantia fluminensis (Commelinaceae) in New Zealand, was used as a model species. By manipulating initial population size over replicated releases, we examined how population size influences: (i) the probability of establishment and (ii) the per capita population growth of established populations.